Round Lake, IL demographics:
population, income, and more
Round Lake population
How many people live in Round Lake
Round Lake is home to 18,628 residents, according to the most recent Census data. Gender-wise, 48.4% of Round Lake locals are male, and 51.6% are female.
Age demographics
The median age in Round Lake is 36, with the population distributed as follows: about 22.8% are children under 15, then 12.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 29.2% of the population, while another 26.2% fall into the 45 to 64 bracket. Finally, around 8.9% are 65 or older.
Racial makeup
In Round Lake, 72.4% of the population are US-born citizens, while 17.4% have gained naturalized citizenship. At the same time, 10.2% of residents are non-citizens. As for race, 49.7% of locals are Caucasian, 4.1% are African American and 12.2% have Asian roots. Another 1.2% are Indigenous American, 0.1% are Pacific Islanders, while 9.8% identify as another race. There’s also a share of 22.8% that includes residents with two or more races.
Households in Round Lake
A peek inside Round Lake households
Round Lake has 6,430 households, with an average of 3 members in each. Of these, 70.1% are families, while the remaining 29.9% are made up of individuals living alone or with non-relatives, such as roommates.
Households stats
Housing in Round Lake
The housing landscape of Round Lake
Round Lake's housing consists of 6,627 units, with 55.5% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 28.6% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.2% of the housing landscape.
The age of buildings in Round Lake
In Round Lake, the median construction year is 2003. About 1.4% of homes were built before the 1940s, with another 1.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 59.6% of homes were added from 2000 to 2009, 7.4% between 2010 and 2019, and 1% are part of the newest wave of development.
Round Lake occupancy rates
Out of the 6,430 occupied housing units in Round Lake, 77.2% are owner-occupied, while 22.8% are lived in by tenants. Meanwhile, 3% of all homes on the local market sit vacant.
Round Lake housing costs
Housing costs in Round Lake come to a median of $1,920 per month, while tenants specifically pay a median gross rent of $1,710.
Education in Round Lake
Round Lake education at a glance
About 29.6% of the population in Round Lake went to high school, while 17.7% pursued college studies. Another 7.5% earned an associate degree and 29.5% hold a bachelor’s. Meanwhile, 9% went even further, earning a master’s or doctorate.
Income in Round Lake
How much people earn in Round Lake
The average annual household income in Round Lake was $123,506 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -1.9% change from the previous year. At the same time, the median income stood at $111,977, reflecting a +2.8% shift over the same period.
Round Lake income by age
In Round Lake, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $113,501. Those with someone between 45 and 64 in charge, often well established professionally, earn $127,644 overall. Overall, 91.2% of the locals in this community live above the poverty line.
Average renter income in Round Lake
To get a better sense of what renters earn on average in Round Lake, their median household income was $46,522 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 44.1%, shows what portion of their earnings goes toward housing expenses.
Employment in Round Lake
Workforce and job types in Round Lake
The job market in Round Lake is powered by 9,996 working residents, spread across a range of industries and roles. 77.5% of the working population are employed in professional or administrative positions, while 22.5% are in hands-on or service-based jobs. Also, 7% run their own businesses, 75.6% are employed by private companies, and 9.7% work in the public sector.
Workforce demographics
Available workforce
The unemployment rate in Round Lake stands at 6%, representing the share of the workforce currently without a job and actively looking for one.
Transportation in Round Lake
How people get around in Round Lake
Commuting methods vary: 79.3% of residents travel by personal vehicle and 0.3% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.
What is the median and average household income in Round Lake by zipcode?
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FAQs about Round Lake demographics
What is the total population of Round Lake?
What is the gender ratio in Round Lake?
- 48.4% males (9,026 residents)
- 51.6% females (9,602 residents)
What is the median age in Round Lake?
What is the age distribution of the population in Round Lake?
- Under 15: 22.8% (4,250 residents)
- Ages 15-24: 12.8% (2,382 residents)
- Ages 25-44: 29.2% (5,446 residents)
- Ages 45-64: 26.2% (4,888 residents)
- Over 65: 8.9% (1,662 residents)
What is the racial and ethnic makeup of Round Lake?
- White: 49.7% (9,261 residents)
- Black or African American: 4.1% (763 residents)
- American Indian and Alaska Native: 1.2% (225 residents)
- Asian: 12.2% (2,282 residents)
- Native Hawaiian and Other Pacific Islander: 0.1% (25 residents)
- Two or More Races: 22.8% (4,245 residents)
- Other: 9.8% (1,827 residents)
What percentage of the population in Round Lake are U.S.-born citizens?
How many housing units are there in Round Lake?
How many households are in Round Lake and what is the average household size?
What is the median household income in Round Lake?
What is the employment rate and job market overview for Round Lake?
Job types:
- White-collar workers: 77.5% (7,744 residents)
- Blue-collar workers: 22.5% (2,252 residents)
Places of employment:
- Self-employed: 7% (701 residents)
- Private companies: 75.6% (7,561 residents)
- Governmental workers: 9.7% (970 residents)
- Not-for-profit companies: 7.6% (764 residents)
Data source & methodology
The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.
The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.
No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.